you really shouldnt be throwing shit out, period, hormones or not, I dont think SB or Bino or other good bros here would do that to their chicks even if they are running a cycle, second, you made her promise not to tell her mom, she probably made her mom promise not to tell you which means they BOTH lie and like to stir shit up, I dont think this is healthy, I do sometimes tell my mom stuff when I need advice or if it's something really important but NEVER shit that would make my husband look like an ass in front of her, or anything that might lessen her image of him as a person who is smart and loves, cares and protects me, you;re girl clearly doesnt have a filter and just blurts all shit out, take this into consideration.....
I would argue that this just means mom is probably concerned about her daughter being involved with someone who does crazy shit, and felt the need to step in to make sure her daughter won't be the next thing thrown out a window when something bad happens.